KeHaSpLarms

1)define hydraulic. pressure in liquids

2)define pneumatic. pressure in gases

3)what are 4 hydraulic devices. excavator,bulldozer,backhoe,metal shears

4)what are 4 pneumatic devices. Dentist drill,car jacks,air grinders,impact wrenches

5)How do Hydraulic systems work. a device that transmits an applied force through a liquid to move something else by means of pressure

6)how do pneumatic systems work. a system in which a gas,such as air transmits a force exerted on the gas in a closed space

7)what are major differences between hydraulic an pneumatic systems.

ones uses gas one uses liquids